Matthew 5:31
It has been said, Whoever shall put away his wife, let him give her a writing of divorce:
Torrey's Topical Textbook—AKJV

Matthew 19:3
The Pharisees also came to him, tempting him, and saying to him, Is it lawful for a man to put away his wife for every cause?
Torrey's Topical Textbook—AKJV